JPH04330311A - Delay member for lubricating oil - Google Patents

Abstract

PURPOSE: To flow formed a lubricating oil into a suction pipe with delaying time to remove bubble of the oil, when the oil reveresly flows from a crank case to an oil pan in an internal combustion engine for an automobile. CONSTITUTION: A delay part 1 is arranged to extend on a horizontal surface F bordering on the oil pan. A space (crank case and storage tank V) situated above the delay part 1 is connected with a space (oil pan and oil sump S) situated below the delay part 1 through an oil through hole 14 adjacent to the outside edge 8 of the delay part 1.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a delay element for lubricating oil in an internal combustion engine, which has a crank chamber of a cylinder and an oil pan held in the crank chamber, which is advantageously divided.

0002

[Prior Art] For example, publication ATZ 89 (1987
2, p. 69, an oil baffle plate as a so-called oil slicer is known. This baffle plate is placed between the cylinder block and the oil pan to reduce oil forming, especially at high engine speeds.

[0003] Also, Federal Republic of Germany Patent No. 353
No. 1 352 discloses a honeycomb insert. This insert is arranged in a recess in the oil pan and surrounds the intake pipe of the oil pump. The oil is then allowed to pass through a chamber provided in this insert over time to reach the suction tube, thereby removing foam. However, if there is not enough installation space in the recess of the oil pan, it is not possible to remove oil bubbles with this type of insert.

0004

SUMMARY OF THE INVENTION It is an object of the present invention to provide a delay element which makes it possible to remove as much as possible the oil bubbles formed in an internal combustion engine.

[0005]

[Means for Solving the Problems] According to the present invention, the above-mentioned problem is solved in the first-mentioned delay member, in which the delay member
The chambers (crank chamber and storage tank) located on the plane between the crank chamber and the oil pan and extending on the horizontal plane adjacent to the oil pan and above the delay member (crank chamber and storage tank) are located on the outer edge of the delay member. This problem is solved by connecting the delay member to a lower chamber (oil pan and oil receiver) via adjacent oil flow holes.

[0006]

A further advantageous configuration of the present invention is as claimed in claim 2.
As described below.

[0007] By providing the delay member configured as described above, formed oil is prevented from being sucked in through only a short path. This means that if the delay element is adjacent to a surface that is provided with packing and is located between the crankcase and the oil pan, the oil that is formed and drips from the crankcase will first flow over this delay element to its edges. must flow to the department. The oil then has to flow through the oil passage holes provided in this edge to the underside of the delay element and from there back to the suction basket located in the center of the delay element. In this way, the oil is allowed to take longer to be sucked in, resulting in better foam removal.

Furthermore, the delay element is arranged adjacent to the side with the packing of the horizontally divided oil pan between the recess of the oil pan used as a storage tank and the cover that closes this recess from below. The same advantages as those described above can be obtained even if the That is, the oil flowing back from the crankcase toward approximately the center of the storage tank must follow the aforementioned delay path to reach the suction basket located in the oil reservoir between the delay member and the cover.

According to an advantageous development of the invention, the delay element is held at the oil pump and extends close to the inner edge of the surface provided with the packing. In this case, the delay member has an opening so as to be fixed to the oil pump. The suction basket is then inserted into this opening, the edge area of which is releasably connected to the flange of the oil pump.

According to a further advantageous embodiment of the invention, the edge of the delay element is designed in the form of a flange and is clamped with a seal on the surface adjacent to the oil pan. In this case, it is advantageous if a sealing that acts on both sides is integrated into the edges. This is because this usually eliminates the need for separate packing. Furthermore, a spacer sleeve is incorporated into the packing in the area of the screw fit between the members adjacent to the surface. The result is a seal that is uniform around the entire circumference of the delay member and prevents the packing from collapsing.

The delay element according to the invention is easily manufactured as a stamped part made of sheet metal or as an injection molded part made of plastic. The packing together with the spacer sleeve is then vulcanized as an elastomer to this delay element. Also, if the delay member is made of plastic, the lower side of the delay member facing the oil pan can easily be provided with a rib that extends from the edge of the delay member to the opening of the delay member for the suction basket. Ru. During acceleration, the oil in the oil sump is forcibly guided along this rib to the suction basket.

It is further advantageous that during strong accelerations the lubricating oil below the delay element moves less than the lubricating oil above the delay element. This is because oil from the oil receiver flows only relatively slowly upward through the oil flow hole. Therefore, it is ensured that the suction basket is always surrounded by lubricating oil.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described with reference to the illustrated embodiments.

The illustrated delay element 1 extends in a plane E1 in the housing of a motor vehicle internal combustion engine, which is not illustrated in more detail. This plane E1 includes a plane F between the storage tank V of lubricating oil, that is to say the recess of the oil pan, and the cover 2 which closes the storage tank V towards the bottom. Also arranged in this storage tank V above the delay element 1 is an oil pump 3, which is only partially shown. Furthermore, an opening 4 is provided in the center of the substantially rectangular delay element 1 , the edge area 5 of which is connected via a threaded fit 6 to the flange of the oil pump 3 .

The delay member 1 is formed from a punched material 7. Packing 9 that acts on both sides is attached to the outer flange-shaped edge 8 of the material 7. In this case, the packing 9 has an edge 8
It is surrounded in a letter-shaped manner and has a sealing lip 10. The edge 8 of the material 7 is further formed with an inwardly indented part 11, and adjacent to this inward part 11,
A plurality of small holes 12 are formed in the delay member 1. Also, a spacer sleeve 13 incorporated into the packing 9
is received by the indented portion 11. This spacer sleeve 13 allows the cover 2 to be screwed onto the storage tank V and the delay element 1 to be clamped onto the surface F. Furthermore, a plurality of oil flow holes 14 are formed in a range of the edge 8 extending in the traveling direction XX of the automobile.

During operation of the internal combustion engine, the lubricating oil that is formed and flows back from the crank chamber first flows into the storage tank V through the inflow portion located approximately in the center above the opening 4. Then, the oil flows from this inflow portion to the oil through hole 14, and from there flows back to the suction basket 15. In this way, the lubricating oil flows into the suction basket 15 of the oil receiver S, which is located below the delay member 1 and inserted into the opening 4 from above. Moreover,
Oil bubbles are almost completely removed along such a delay stroke.

Furthermore, since the oil receiver S has only a small height, only a small amount of oil remains between the cover 2 and the delay member 1. During normal operation, this other oil is located above the plane E1, that is, the oil mirror surface. Therefore, the oil that has been formed and has flowed into the storage tank V must settle from the oil mirror surface to near the delay member 1. But it gives you extra time to remove the oil bubbles.

By the way, when the material 7 is manufactured as an injection molded part made of plastic, a rib 16 can be formed on the lower surface of the delay member 1 facing the oil receiver S. This rib 16 extends from the edge 8 towards the opening 4, as indicated by the dashed line in FIGS. 1 and 2. Therefore, the oil is forcibly guided along the ribs 16 to the suction basket 15 during acceleration.

Now, when manufacturing the delay member 1 according to the present invention, first, the material 7 is manufactured in one work process as a punched part having the opening 4, the indentation 11, the oil flow hole 14, and the hole 12. Ru. The edge 8 is then injection molded over the packing 9 and at the same time the spacer sleeve 13 is incorporated into the packing 9. Also, packing 9
Since the material forming the packing 9 passes through the hole 12 during the potting injection molding, the packing 9 is prevented from sliding.

When the cover 2 is attached to the storage tank V, the height H of the spacer sleeve 13 is equal to the sealing lip 1.
Limit compression of 0 to a predetermined amount. This predetermined amount is an amount that ensures a reliable seal on both sides of the packing 9 and avoids crushing of the packing 9.

[Brief explanation of drawings]

FIG. 1 shows a plan view and a partial blank view of a delay element according to the invention;

2 is a sectional view of the material along line II-II according to FIG. 1; FIG.

3 is a sectional view of the delay element along line III-III according to FIG. 1; FIG.

4 is a sectional view of the delay element along the line IV-IV according to FIG. 1; FIG.

[Explanation of symbols]

1 Delay member 2 Cover 3 Oil pump 4 Opening 5 Edge range 6 Screw fitting part 7. Material 8 Edge 9 Packing 10 Seal lip 11 Bay entrance 12 holes 13 Spacer sleeve 14 Oil flow hole 15 Inhalation basket 16 Ribs E1 plane F side H Spacer sleeve height S Oil receiver V Storage tank

Claims (9)

[Claims] 1. A delay member for lubricating oil in an internal combustion engine comprising a crank chamber of a cylinder and an oil pan held in the crank chamber, the delay member (1) comprising:
The chamber (F) is located on the plane (E1) and extends on the horizontal plane (F) adjacent to the oil pan, above the delay member (1).
The crank chamber and the storage tank V) are connected to the chambers below the delay member (1) (the oil pan and the A delay element for lubricating oil, characterized in that it is connected to S). 2. Claim 1, wherein the edge (8) is designed in the form of a flange and is clamped on the horizontal plane (F).
Delay member as described. 3. The opening (4) of the delay element (1) has an annular edge area (5), which edge area (5) is releasably connected to the oil pump (3). 2. The delay member according to claim 1, wherein: 4. The edge (8) is formed in the form of a flange and is tightened on the horizontal plane (F), the delay element (1) having an opening (4), the opening 2. A delay element according to claim 1, wherein the edge region (5) of (4) is releasably connected to the oil pump (3). [Claim 5] Annular packing (9) on the edge (8)
Any one of claims 1 to 4, wherein the
Delay member as described in section. 6. Delay element according to claim 5, wherein the packing (9) surrounds the edge (8) in a U-shape. 7. At the edge (8) for receiving a spacer sleeve (13) which is incorporated into the packing (9).
7. A delay element according to claim 5, characterized in that an inwardly extending indentation (11) is formed. 8. The packing (9) has a sealing lip (10) perpendicular to the plane (E1), which sealing lip (10) is connected to the spacer sleeve on one side in the area of the indentation (11). 8. A delay member according to claim 7, wherein the delay member is guided around (13). [Claim 9] The delay member (1) is an oil receiver (S).
9. Delay element according to claim 1, further comprising a rib (16) on the side facing towards the edge (8) extending from the edge (8) to the opening (4).